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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 5 |
| 8 | 4 |
| 9 | 5 |
| 10 | 7 |
| 11 | 8 |
| 12 | 8 |
| 13 | 10 |
| 14 | 8 |
| 15 | 9 |
| 16 | 12 |
| 17 | 11 |
| 18 | 13 |
| 19 | 16 |
| 20 | 14 |
| 21 | 15 |
| 22 | 16 |
| 23 | 14 |
| 24 | 17 |
| 25 | 20 |
| 26 | 20 |
| 27 | 17 |
| 28 | 21 |
| 29 | 25 |
| 30 | 23 |
| 31 | 26 |
| 32 | 28 |
| 33 | 27 |
| 34 | 25 |
| 35 | 29 |
| 36 | 25 |
| 37 | 31 |
| 38 | 27 |
| 39 | 34 |
| 40 | 34 |
| 41 | 28 |
| 42 | 39 |
| 43 | 35 |
| 44 | 36 |
| 45 | 41 |
| 46 | 36 |
| 47 | 40 |
| 48 | 41 |
| 49 | 41 |
| 50 | 42 |
| 51 | 45 |
| 52 | 35 |
| 53 | 49 |
| 54 | 45 |
| 55 | 47 |
| 56 | 46 |
| 57 | 49 |
| 58 | 47 |
| 59 | 49 |
| 60 | 47 |
| 61 | 54 |
| 62 | 54 |
| 63 | 52 |
| 64 | 56 |
| 65 | 54 |
| 66 | 54 |
| 67 | 58 |
| 68 | 56 |
| 69 | 59 |
[0,0,1,2,2,3,5,4,5,7,8,8,10,8,9,12,11,13,16,14,15, 16,14,17,20,20,17,21,25,23,26,28,27,25,29,25,31, 27,34,34,28,39,35,36,41,36,40,41,41,42,45,35,49, 45,47,46,49,47,49,47,54,54,52,56,54,54,58,56,59] |